[TUHS] What is this 1972 C/NB program?

[Jonathan Gray via TUHS]

On Thu, May 14, 2026 at 01:57:27AM +0000, Thalia Archibald via TUHS wrote:
> This mysterious program is in the s1 tape, but has not yet been identified.
> Does it look familiar?
>     https://github.com/DoctorWkt/unix-jun72/blob/master/src/cmd/unknown.c

very close to
https://www.tuhs.org/cgi-bin/utree.pl?file=USG_PG3/usr/source/cmd2/hyphen.c

described in the Program Generic PG-1C300 issue 2 manual on bitsavers:

hyphen(VI) find hyphenated words